Puerto Rico weather in May 2026

Expect daytime maximum temperatures of 84°F in Puerto Rico in May and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with 16 days with some rainfall and typically 7.2 inches of rainfall in the month.

  • 84°F maximum daytime temperature in May in Puerto Rico (San Juan)84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 16 days with some rainfall in May in Puerto Rico (San Juan)16
    16 days with some rainfall
  • 72°F minimum night-time temperature in May in Puerto Rico (San Juan)72
    72°F min night temperature
  • 13 hours of daylight per day in May in Puerto Rico (San Juan)13
    13 hours of daylight per day
  • High heat & humidity in May in Puerto Rico (San Juan)H
    High heat & humidity
  • 7.2 inches monthly rainfall in May in Puerto Rico (San Juan)7.2
    7.2 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Puerto Rico (San Juan)11
    11+ (Extreme) UV index
  • 81°F sea temperature in May in Puerto Rico (San Juan)81
    81°F sea temperature

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The May weather guide for Puerto Rico (San Juan) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Puerto Rico destinations

Below are average maximum temperatures at popular countries, regions and places in Puerto Rico in May. Select a holiday destination to see more weather parameters.

All Puerto Rico destinations

Metric (°C)  |  Imperial (°F)

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More about Puerto Rico

How hot is it in Puerto Rico in May?

Daytime temperatures usually reach 84°F in San Juan, Puerto Rico in May with high heat and humidity, falling to 72°F at night.

How sunny is it in Puerto Rico in May?

There are normally 8 hours of bright sunshine each day in San Juan, Puerto Rico in May - that's 63% of daylight hours.

How warm is the sea around Puerto Rico in May?

The average sea temperature around San Juan, Puerto Rico in May is 81°F.

Does it rain in Puerto Rico in May?

There are usually 16 days with some rain in San Juan, Puerto Rico in May and the average monthly rainfall is 7.2 inches.

Puerto Rico May sunrise & sunset times

Browse the sunrise and sunset times for Puerto Rico in May 2026. Select a month to view Puerto Rico sunrise and sunset times for the next 12 months. The Puerto Rico sunrise and sunset times shown below are for San Juan.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:57 18:46
Saturday, 16th May 2026 05:50 18:51
Sunday, 31st May 2026 05:47 18:57

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